Hi. I am lalatendu Pradhan 23 M. 1. While doing exercise I have pain at left side chest. I don't know if it is muscle pain or heart pain or it is due to doing exercise in wrong procedure. 2. How to know if I have any blockage or thicker vein which can lead to blockage in future. I have high cholesterol (223). 3. How to check VO2 max.

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